- The differences themselves mean that they complement each other, if they can use them within the framework of a joint planning, says Jacob Westberg, associate professor and senior lecturer in military science, at the Swedish National Defense College.

Differences at sea and on the ground

Finland, for example, has no submarine defense to speak of.

The country has not had any submarines since World War II, when the Soviet Union demanded that the submarine weapon be phased out, while Sweden can deploy more submarines if needed.

At the same time, Finland has become very good at mining water to prevent warships, due to the previous ban.

- You then have an increased ability, and can do different things underwater, says Westberg.

Finland, on the other hand, has retained large parts of its total defense, and has not dismantled what Sweden has done, and on the ground Finland has an advantage.

Sweden has no volume in its army, and that means that we have a very limited endurance and can not be in so many places at the same time.

While Finland can mobilize 280,000 men, if they are given the opportunity to mobilize, says Westberg.

Countries have about the same number of soldiers available, who can be deployed quickly in the event of a sudden attack.

Different forces in the air

In the air, they have different battle planes that are equipped with different types of robots.

Finland is one of the first countries in the world to have access to one of the USA's state-of-the-art robot systems for attacking ground targets.

- This is exactly the long-term capacity that we would like to acquire for our Jas today, because we lack it, says Westberg.

Jas, on the other hand, are excellent fighter jets, and in the event of an attack, you need to be able to both defend your airspace and attack the enemy. 

- But it is important to emphasize that not even together can these two small states develop a sufficient capacity of their own to deter Russia from an attack.

The other collaborations we have, we will need to continue with, says Westberg.